# SNIFF
##########################
- def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug=False, faster=False):
+ def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug=False, faster=False, parsed=True):
#reset eveything on the chip
self.client.serInit()
RXFSIDL = 0x19;
#### split SID into different regs
- SIDlow = (ID & 0x03) << 5; # get SID bits 2:0, rotate them to bits 7:5
+ SIDlow = (ID & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
SIDhigh = (ID >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
#write SID to regs
if (verbose == True):
print "Filtering for SID %d (0x%02xh) with filter #%d"%(ID, ID, filter);
- comment = comment + ("f%d" %(ID))
+ comment += ("f%d" %(ID))
self.client.MCPsetrate(freq);
row.append("%f"%time.time());
if( verbose==True):
- print self.client.packet2str(packet)
+ #if we want to print a parsed message
+ if( parsed == True):
+ packetParsed = self.client.packet2parsed(packet)
+ sId = packetParsed.get('sID')
+ msg = "sID: %04d" %sId
+ if( packetParsed.get('eID')):
+ msg += " eID: %d" %packetParsed.get('eID')
+ msg += " rtr: %d"%packetParsed['rtr']
+ length = packetParsed['length']
+ msg += " length: %d"%length
+ msg += " data:"
+ for i in range(0,length):
+ dbidx = 'db%d'%i
+ msg +=" %03d"% ord(packetParsed[dbidx])
+ print msg
+ # if we want to print just the message as it is read off the chip
+ else:
+ print self.client.packet2str(packet)
if(debug == True):
return packetcount
- def filterStdSweep(self, freq, time = 5):
+ def filterStdSweep(self, freq, low, high, time = 5):
msgIDs = []
- for i in range(0, 2047, 6):
+ self.client.serInit()
+ self.client.MCPsetup()
+ for i in range(low, high, 6):
print "sniffing id: %d, %d, %d, %d, %d, %d" % (i,i+1,i+2,i+3,i+4,i+5)
- comment = "sweepFilter_%d_%d_%d_%d_%d_%d" % (i,i+1,i+2,i+3,i+4,i+5)
+ comment= "sweepFilter: "
+ #comment = "sweepFilter_%d_%d_%d_%d_%d_%d" % (i,i+1,i+2,i+3,i+4,i+5)
description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d, %d, %d, %d, %d, %d" % (i,i+1,i+2,i+3,i+4,i+5)
count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [i, i+1, i+2, i+3, i+4, i+5])
if( count != 0):
for j in range(i,i+5):
- comment = "sweepFilter: %d" % (j)
+ comment = "sweepFilter: "
+ #comment = "sweepFilter: %d" % (j)
description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d " % j
- count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [j])
+ count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [j, j, j, j])
if( count != 0):
msgIDs.append(j)
return msgIDs
- def sweepRandom(self, freq, number = 5, time = 5,):
+ def sweepRandom(self, freq, number = 5, time = 200):
msgIDs = []
ids = []
+ self.client.serInit()
+ self.client.MCPsetup()
for i in range(0,number,6):
idsTemp = []
- comment = "sweepFilter"
+ comment = "sweepFilter: "
for j in range(0,6,1):
id = randrange(2047)
- comment += "_%d" % id
+ #comment += "_%d" % id
idsTemp.append(id)
ids.append(id)
print comment
count = self.sniff(freq=freq, duration=time, description=description, comment = comment, standardid = idsTemp)
if( count != 0):
for element in idsTemp:
- comment = "sweepFilter: %d" % (element)
+ #comment = "sweepFilter: %d" % (element)
+ comment="sweepFilter: "
description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d " % element
count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [element, element, element])
if( count != 0):
- def spit(self,freq, standardid,debug):
-
- comm.reset();
+ def spitSetup(self,freq):
+ self.reset();
self.client.MCPsetrate(freq);
self.client.MCPreqstatNormal();
- print "initial state:"
- print "Tx Errors: %3d" % self.client.peek8(0x1c);
- print "Rx Errors: %3d" % self.client.peek8(0x1d);
- print "Error Flags: %02x\n" % self.client.peek8(0x2d);
- print "TXB0CTRL: %02x" %self.client.peek8(0x30);
- print "CANINTF: %02x\n" %self.client.peek8(0x2C);
- print "\n\nATTEMPTING TRANSMISSION!!!"
+
+ def spitSingle(self,freq, standardid, repeat, duration = None, debug = False, packet = None):
+ self.spitSetup(freq);
+ spit(self,freq, standardid, repeat, duration = None, debug = False, packet = None)
+ def spit(self,freq, standardid, repeat, duration = None, debug = False, packet = None):
+
#### split SID into different regs
- SIDlow = (standardid[0] & 0x03) << 5; # get SID bits 2:0, rotate them to bits 7:5
+ SIDlow = (standardid[0] & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
SIDhigh = (standardid[0] >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
- packet = [SIDhigh, SIDlow, 0x00,0x00, # pad out EID regs
- 0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
- # lower nibble is DLC
- 0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xFF]
+ if(packet == None):
+
+ # if no packet, RTR for inputted arbID
+ # so packet to transmit is SID + padding out EID registers + RTR request (set bit 6, clear lower nibble of DLC register)
+ packet = [SIDhigh, SIDlow, 0x00,0x00,0x40]
+
- packetE = [SIDhigh, SIDlow | 0x80, 0x00,0x00, # pad out EID regs
+ #packet = [SIDhigh, SIDlow, 0x00,0x00, # pad out EID regs
+ # 0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
+ # # lower nibble is DLC
+ # 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0xFF]
+ else:
+
+ # if we do have a packet, packet is SID + padding out EID registers + DLC of 8 + packet
+ #
+ # TODO: allow for variable-length packets
+ #
+ packet = [SIDhigh, SIDlow, 0x00,0x00, # pad out EID regs
0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
# lower nibble is DLC
- 0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xFF]
-
-
- self.client.txpacket(packetE);
+ packet[0],packet[1],packet[2],packet[3],packet[4],packet[5],packet[6],packet[7]]
+
- checkcount = 0;
- TXB0CTRL = self.client.peek8(0x30);
+ if(debug):
+ if self.client.MCPcanstat()>>5!=0:
+ print "Warning: currently in %s mode. NOT in normal mode! May not transmit.\n" %self.client.MCPcanstatstr();
+ print "\nInitial state:"
+ print "Tx Errors: %3d" % self.client.peek8(0x1c);
+ print "Rx Errors: %3d" % self.client.peek8(0x1d);
+ print "Error Flags: %02x\n" % self.client.peek8(0x2d);
+ print "TXB0CTRL: %02x" %self.client.peek8(0x30);
+ print "CANINTF: %02x\n" %self.client.peek8(0x2C);
+ print "\n\nATTEMPTING TRANSMISSION!!!"
- while(TXB0CTRL | 0x00 != 0x00):
- checkcount+=1;
+
+ print "Transmitting packet: "
+ for byte in packet:
+ print "%02x " %byte,
+
+ self.client.txpacket(packet);
+
+ if repeat:
+ print "\nNow looping on transmit. "
+ if duration!= None:
+ starttime = time.time();
+ while((time.time()-starttime < duration)):
+ self.client.MCPrts(TXB0=True);
+ print "MSG printed"
+ else:
+ while(1):
+ self.client.MCPrts(TXB0=True);
+ print "messages injected"
+ # MORE DEBUGGING
+ if(debug):
+ checkcount = 0;
TXB0CTRL = self.client.peek8(0x30);
- if (checkcount %30 ==0):
- print "Tx Errors: %3d" % self.client.peek8(0x1c);
- print "Rx Errors: %3d" % self.client.peek8(0x1d);
- print "EFLG register: %02x" % self.client.peek8(0x2d);
- print "TXB0CTRL: %02x" %TXB0CTRL;
- print "CANINTF: %02x\n" %self.client.peek8(0x2C);
+
+ print "Tx Errors: %3d" % self.client.peek8(0x1c);
+ print "Rx Errors: %3d" % self.client.peek8(0x1d);
+ print "EFLG register: %02x" % self.client.peek8(0x2d);
+ print "TXB0CTRL: %02x" %TXB0CTRL;
+ print "CANINTF: %02x\n" %self.client.peek8(0x2C);
+
+ while(TXB0CTRL | 0x00 != 0x00):
+ checkcount+=1;
+ TXB0CTRL = self.client.peek8(0x30);
+ if (checkcount %30 ==0):
+ print "Tx Errors: %3d" % self.client.peek8(0x1c);
+ print "Rx Errors: %3d" % self.client.peek8(0x1d);
+ print "EFLG register: %02x" % self.client.peek8(0x2d);
+ print "TXB0CTRL: %02x" %TXB0CTRL;
+ print "CANINTF: %02x\n" %self.client.peek8(0x2C);
+ def setRate(self,freq):
+ self.client.MCPsetrate(freq);
parser.add_argument('-c','--comment', help='Comment attached to ech packet uploaded',default=None);
parser.add_argument('-b', '--debug', action='store_true', help='-b will turn on debug mode, printing packet status', default=False);
parser.add_argument('-a', '--standardid', type=int, action='append', help='Standard ID to accept with filter 0 [1, 2, 3, 4, 5]', default=None);
- parser.add_argument('-x', '--faster', action='store_true', help='-x will use "fast packet recieve," which may duplicate packets and/or cause other weird behavior', default=False);
-
+ parser.add_argument('-x', '--faster', action='store_true', help='-x will use "fast packet recieve," which may duplicate packets and/or cause other weird behavior.', default=False);
+ parser.add_argument('-r', '--repeat', action='store_true', help='-r with "spit" will continuously send the inputted packet. This will put the GoodTHOPTHER into an infinite loop.', default=False);
+
args = parser.parse_args();
freq = args.freq
debug = args.debug
standardid = args.standardid
faster=args.faster
+ repeat = args.repeat
comm = GoodFETMCPCANCommunication();
# transmission (travis thinks this is because we're sniffing in listen-only
# and thus not generating an ack bit on the recieving board)
if(args.verb=="spit"):
- comm.spit(freq=freq, standardid=standardid, debug=debug)
+ comm.spitSingle(freq=freq, standardid=standardid,duration=duration, repeat=repeat, debug=debug)
projects / goodfet / blobdiff